PPP street lighting in Germany
PPP street lighting in Germany
PPP street lighting in Germany
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Light emitt<strong>in</strong>g diode (LED)<br />
• Short development-cycles and cont<strong>in</strong>uous improvement of energy-efficiency<br />
• Close to become a mature and cost-effective technology<br />
• The <strong>in</strong>stallation of LED’s offers huge sav<strong>in</strong>g potentials for energy and CO 2 -emissions<br />
• Some municipalities have already <strong>in</strong>stalled test-projects to collect reference data<br />
• Investment costs are still high and the lifecycle is still unpredictable as suppliers don’t<br />
guarantee the lifetime LED’s<br />
• Currently there is still uncerta<strong>in</strong>ty about<br />
• Lifetime of 40.000 - 50.000h<br />
• O&M costs, energy-consumption<br />
• Possible effect of dimm<strong>in</strong>g, temperature and environment on life-time<br />
• Major political <strong>in</strong>terest to develop and implement LED technology<br />
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